The invention provides a method for
processing a precision part by rotating a horizontal jig boring
machine for 180 degrees. Firstly, when a
workbench of the horizontal jig boring
machine is in a 0-degree position, a tool, a part and a reference ball are clamped, and metering is performed so as to align the reference axis of the part, so that the reference axis of the part is perpendicular to the X axis of a coordinate
system of the
workbench; in the position of which the height is the same as the plane of the
workbench, an
infrared probe is used for measuring central coordinates of the reference ball, reference axis coordinates of the to-be-processed part are measured, the distance between the center of the reference ball and the to-be-processed reference axis is recorded, and the characteristics and reference of the part are processed when the workbench is in the 0-degree position; then the workbench is rotated for 180 degrees, similarly, in the position of which the height is the same as the plane of the workbench, the
infrared probe is used for measuring the center of the reference ball, the central coordinates of the reference ball are used as the reference, and the distance X which is recorded previously is matched, so that
numerical control programs are compiled, and the to-be-processed characteristics are processed. According to the method, in the conditions that the
programming center of the part is not in the axis rotating center of the workbench and rotary errors exist in the rotary center of the workbench of a
machine tool, the
processing precision can be effectively increased, and wide popularization and application values are obtained.